Infineon BTS5090-2EKA: A High-Current PROFET™ Smart High-Side Power Switch

Modern automotive and industrial systems demand robust, intelligent, and highly reliable solutions for controlling high-current loads. The Infineon BTS5090-2EKA stands out as a premier device in this domain, representing a significant advancement in power switching technology. As a member of Infineon's PROFET™ (Protected MOSFET) family of smart high-side switches, it is engineered to deliver exceptional performance while integrating comprehensive protection and diagnostic features.

At its core, the BTS5090-2EKA is designed to drive resistive or inductive loads with a continuous current of up to 5.5 A from a standard 12 V battery system. Its low typical on-state resistance (RDS(on)) ensures highly efficient operation by minimizing voltage drop and power dissipation, which is critical for thermal management and overall system efficiency, especially in space-constrained and high-ambient-temperature environments like an automotive engine control unit (ECU).

What truly defines this device as "smart" is its suite of integrated protective functions. It is equipped with advanced protection features including protection against over-load, short-circuit, over-temperature, and over-voltage conditions. These are not just safety features; they are crucial for enhancing the long-term reliability of both the switch itself and the entire electronic control unit (ECU). Furthermore, the device provides precise diagnostic feedback to the microcontroller. Through its status output pin, it can communicate information about open-load conditions, short-circuit events, and overtemperature warnings, enabling predictive maintenance and swift system troubleshooting.

The BTS5090-2EKA also incorporates reverse battery protection, a vital requirement for all automotive applications, safeguarding the circuit from damage if the battery is connected incorrectly. Its ability to handle high inrush currents, such as those generated by lamp or motor startups, makes it exceptionally versatile for a wide array of applications, from driving headlights and seat heaters to controlling small DC motors and solenoids.

Housed in a compact, surface-mountable PG-TO263-7-43 package, the switch offers an optimal balance of power handling and board space efficiency. Its design is compliant with stringent automotive quality standards, making it a trusted choice for safety-critical systems.

ICGOO FIND: The Infineon BTS5090-2EKA PROFET™ is a superior high-current smart high-side switch that combines robust power handling with intelligent integrated protection and diagnostics. It is an ideal solution for designers seeking to improve reliability, simplify board design, and enhance the functionality of automotive and industrial control systems.

Keywords: Smart High-Side Switch, Over-Current Protection, Diagnostic Feedback, Automotive Grade, Reverse Battery Protection.